Can we find something by looking at the most populair keys of the last 60 years?

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The keys are set in pitch classes, so 0=C, 1=C#/Db, 2=D etc

As you can see, the most popular key in all decades is C. The least popular key overall seems to be D. Something I don’t understand is that the key only seems to go up till A#. I can’t find the B…

### Having a deeper look at the most positive tunes of each decade (playlist) and see if a chordogram can tell us more

Having a deeper look at the most positive tunes of each decade (playlist) and see if a cepstrogram can tell us more

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For some reason I haven’t managed to get all the cepstrograms next to eachother… Does someone have any tips/code I can use?

The Happiest of the Decades

Throughout the decades we have seen happier and sadder times. Each decade has been marked by the tough times and the good times, as are we. Music has long been a means of expression for human beings, in both listening as playing. So maybe music can tell us more about the emotions of a decade’s zeitgeist, which brings me to my question; which decade was the happiest, and what can the popular music released in that decade tell us about the collective happiness?

Emotional Stats

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These graphs show the valence (x axis) and the [popularity (y axis) of Spotify’s own “All Out” playlists of each decade from the 60s up till the 10s. The size of the dots indicates the danceability and the colour indicates the mode (major/minor) of the song, 1 for major, 0 for minor.

Conclusions I do not have yet

• in modern music more minor
• 00s more danceable?